Alexander Henry Slocum Jr., M.D., PH.D.

Primary specialty

Plastic Surgery PhysicianTaxonomy code 208200000X

License

20908 Issued in NH

Practice address

100 Borthwick Ave Ste 220
Portsmouth, NH 03801-4115

Phone

(603) 777-5606

NPI assigned

May 31, 2015

Sex

Male

Sole proprietor

Yes

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 4

Addresses

Medicare fee-for-service enrollment

Enrolled in NH

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: Yes
• Power mobility devices: Yes
• Hospice: Yes

Green means eligible to order or refer.

Enrollment records 1

Specialty

Plastic and Reconstructive Surgery

Education

JC Edwards School of Medicine, Marshall University, 2015

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Practice addresses (Care Compare)

Procedures performed for Medicare patients

Medicare enrollment (NPD)

Enrolled

Credentials

Doctor of Medicine, Doctor of Philosophy

State licenses

Practice roles

Locations

Interoperability endpoints

• Direct secure messaging: aslocum@directaddress.net

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships and National Provider Directory roles.

• Seacoast Plastic Surgery and Medical Aesthetics, PLLC

  • Plastic Surgery Physician
  • Portsmouth, NH
  • NPI 1134992704

  NH, Plastic Surgery

  Medicare reassignment NPD Authorized official
• Atlantic Coast Surgical Suites, LLC

  • Ambulatory Surgical Clinic/Center
  • Seabrook, NH
  • NPI 1194239483
  NPD

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1433030400000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1776643200000",
    "number": "1275913733",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "100 BORTHWICK AVE STE 220",
            "city": "PORTSMOUTH",
            "state": "NH",
            "postal_code": "038014115",
            "telephone_number": "603-956-6059",
            "fax_number": "603-956-6091"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "100 BORTHWICK AVE STE 220",
            "city": "PORTSMOUTH",
            "state": "NH",
            "postal_code": "038014115",
            "telephone_number": "603-777-5606"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "20 Ashburton Pl",
            "address_purpose": "LOCATION",
            "city": "Boston",
            "state": "MA",
            "postal_code": "021082705",
            "country_code": "US",
            "telephone_number": "617-390-8910",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "last_name": "SLOCUM",
        "first_name": "ALEXANDER",
        "middle_name": "HENRY",
        "name_prefix": "Dr.",
        "name_suffix": "Jr.",
        "credential": "M.D., PH.D.",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2015-05-31",
        "last_updated": "2026-04-20",
        "certification_date": "2026-04-20",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "2086S0122X",
            "taxonomy_group": "",
            "desc": "Surgery, Plastic and Reconstructive Surgery",
            "state": "NH",
            "license": "20908",
            "primary": false
        },
        {
            "code": "208200000X",
            "taxonomy_group": "",
            "desc": "Plastic Surgery",
            "state": "NH",
            "license": "20908",
            "primary": true
        },
        {
            "code": "2086S0122X",
            "taxonomy_group": "",
            "desc": "Surgery, Plastic and Reconstructive Surgery",
            "state": "WI",
            "license": "67919-20",
            "primary": false
        },
        {
            "code": "208200000X",
            "taxonomy_group": "",
            "desc": "Plastic Surgery",
            "state": "MA",
            "license": "10163216",
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Emilee Sirois, MD
• Melissa Sirois
• Olivia Sisson, RBT
• Meghan Sjurson Rich, LCMHC
• Christianna Skoczek
• Mary Dawn Small
• Smile Artz PA
• Alyssa Reyes Smith, M.D.
• Amanda Smith, MS CCC SLP
• Clayton Patrick Smith, MD

• All providers in Portsmouth, NH
• Plastic Surgery Physician in New Hampshire

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Apr 20, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.